Roller-skate.



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NGL 893,341.

APPLICATION FILED MAE, Q 190B.

III; Il

IEEE:

JOHANNES F. H. MARTINSEN, OFy CHICAGO, ILLINOIS.

ROLLER-SKATE Specification of Letters Patent.

Patented July 14, 1908.

Application led March 9, 1908. Serial No. 419,914.

To all whom it may concern:

Be it known that I, JOHANNES F. I-I. MAR- frINsEN, a citizen of theUnited States, residlng at Chicago, in the county of Cook and State ofIllinois, have invented a certain new and useful ImprovementV inRoller-Skates, of which the following is a specification.

My invention relates to roller skates, and the object of the inventionis to provide means to yieldingly support the foot of the skater and topermit the rocking movement which is possible in ice skating.

I obtain my obj ect by the mechanism illustrated in the accompanyingdrawings, in which:

Figure 1 is a side view'of a skate embodying my invention. Fig. 2 is aplan sectional view thereof taken on the line 2 2 of Fig. 1. Fig. 3 is atransverse sectional elevation taken on the line 3 3 of Fig. 1, and Fig.4 is a perspective view of'a portion of the footrest.

Similar numerals refer to similar parts throughout the several views.

The truck 10 is su ported upon the rollers' 11 and consists pre erablyof a single piece of sheet steel lying, in the main, horizontally, buthaving lateral depending flanges `10a with extensions 10b adapted vtosup ort the axles 12. The foot rest 13 is provi ed with suitable meansof attachment to the foot of the user. In the present instance theseattaching means consist of a heel plate 14 having a heel strap 15 and atoe plate 16 having a toe strap 17. These attaching means may assume anydesirable form.

In its simplest and best form the foot rest 13 consists of a plate adated, in the main, to lie horizontally above t e truck 10, and isprovided with lateral depending stiffening lianges 13a with extensions13b and 13C at the front and rear respectively. A spring 18 which ispreferably of a length approximately equal to the length of the truck issecured at' its middle to the middle of said truck. `The preferred meansof attachment are the rivets 19, which are located one in front of theother in order to hold the middle portionof the spring firmly andrigidly to the truck. The ends of the spring extend upwardly from themiddle portion, and are attached at the front and rear ends to theextensions 13b and 13C respectively. In the preferred form ofattachment, eyes 18a are formed at the extremities of the s ring, andthese inclose. bolts 20.

-One of tiese bolts is rigidly fastened to the extension 13C and theother is slidingly mountedl in the horizontal slot 13d in the extension13b.A This affords the requisite play between the parts and permits thespring to expand and contract as the footrest falls and risesrelativelyto the truck.

When the skate is in use, the footrest may yield downwardly withoutdeparting from horizontal position, or it may be tilted backwards orforward, as a result of which the sensation to the skater will besimilar to that when using ice skates. This construction has theadvantage, however, of giving more yielding support to the skater thanordinarily occurs musing ice skates. The spring absorbs all ordinary jardue to the inequalities in the surface skated over and gives asmoothness in running which greatly adds to the pleasure yof its use. Aheavy or light spring will be employed depending upon the weight of theperson who is to use it.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is:

1. In a roller skate, a truck provided with rollers, a footrest havingmeans of attachment to the foot of the wearer, a spring rigidly fastenedto the middle portion of the truck, a pivoted connection between one endof the s ring and the corresponding end of the truc and a slidingconnection between the other end of the spring and corresponding end ofthe truck. l

2. In a roller skate, the combination of a truck provided with rollers,a footrest having means of attachment to the foot of the wearer, aspring rigidly fastened to the middle portion of the truck andarticulate connection between the rear end of the spring and the rearend of the footrestand a sliding connection between the forward endofthe spring and the forward end of the' footrest.

3. In a roller skate, two parallel rigid members, the lower one mountedon rollers and the u per one adapted to be secured to the foot of theuser, the upper member having lateral depending iianges horizontallyslotted, a strip of spring metal rigidly fastened in the middle to theloWer of said memscribed my name in the presence of two bers and at itsends connected to the upper Witnesses.

of said members, one of said Connections noluding a bolt held by saidSpring and pen`e- JOHANNES F H' MARTINSEN' trating the slots in theflanges of said upper lVtnesses:

member. HOWARD M. COX,

In Witness whereof, I have hereunto sub- C. J. CHRIsToFFEL.

